I wonder if boas can survive Pennsylvania winters. Probably not, but maybe. The everglades here in Florida are home of to what promises to eventually be the largest population of Burmese pythons in the world. They will reach a poppulation peak when every other animal in the glades has gone through Burmese digestive tracts. Then they will decline somewhat or move aggressively into the uplands (an entirely relative designation- it refers to the Flatte Mountains of Central Florida) and cities.
Napalm their entire habitat in Florida, maybe that will fix it.
Um... I’m not sure where you got your information about Burmese pythons but there is absolutely no way Burms are moving north. Nice fear mongering though.